PFW: Add resync mechanism if a subsystem needs resync

BZ: 76267

In the case of a hw subsystems reset, it's possible that its
parameter managed by the PFW may not be aligned with the PFW
blackboard.
A re-synchronization mechanism is implemented to ensure that the
subsystem is re-synchronized on the next configurations application.

Change-Id: I032150955d25a7020cf494e69456897b4c157916
Signed-off-by: Guillaume Denneulin <guillaume.denneulin@intel.com>
Reviewed-on: http://android.intel.com:8080/83015
Reviewed-by: Rocard, KevinX <kevinx.rocard@intel.com>
Reviewed-by: Centelles, Sylvain <sylvain.centelles@intel.com>
Tested-by: Dixon, CharlesX <charlesx.dixon@intel.com>
Reviewed-by: cactus <cactus@intel.com>
Tested-by: cactus <cactus@intel.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/parameter/SystemClass.cpp b/parameter/SystemClass.cpp
index dbce345..bf98cb1 100644
--- a/parameter/SystemClass.cpp
+++ b/parameter/SystemClass.cpp
@@ -232,6 +232,26 @@ const CSubsystemLibrary* CSystemClass::getSubsystemLibrary() const
     return _pSubsystemLibrary;
 }
 
+// Fill syncer-set with syncers from subsytems that need resync
+void CSystemClass::checkForSubsystemsToResync(CSyncerSet& syncerSet)
+{
+    uint32_t uiNbChildren = getNbChildren();
+    uint32_t uiChild;
+
+    for (uiChild = 0; uiChild < uiNbChildren; uiChild++) {
+
+        CSubsystem* pSubsystem = static_cast<CSubsystem*>(getChild(uiChild));
+
+        // Collect and consume the need for a resync
+        if (pSubsystem->needResync(true)) {
+
+            log_info("Resynchronizing subsystem: %s", pSubsystem->getName().c_str());
+            // get all subsystem syncers
+            pSubsystem->fillSyncerSet(syncerSet);
+        }
+    }
+}
+
 bool CSystemClass::init(string& strError)
 {
     return base::init(strError);